Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NDavid S. Miller <davem@davemloft.net>

tg3_restart_ints() is called to re-enable interrupts after tg3_poll()
has finished all the work. It calls tg3_cond_int() to force an interrupt
if the status block updated bit is set. The updated bit will be set if
there is a new status block update sometime during tg3_poll() and it can
be very often. The worst part is that even if all the work has been
processed, the updated bit remains set and an interrupt will be forced
unnecessarily.

The fix is to call tg3_has_work() instead to determine if new work is
posted before forcing an interrupt. The way to force an interrupt is
also changed to use "coalesce_now" instead of "SETINT". The former is
generally a safer way to force the interrupt.

Also deleted the first parameter to tg3_has_work() which is unused.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch refreshes the hw rx producer in tg3_rx() so that additional
work posted by the hardware can be processed.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch fixes a bug that causes tg3_has_work() to always return 1.

rx work is determined by comparing tp->rx_rcb_ptr with the current hw
producer index. The hw producer index is modulo the ring size, but tp-
>rx_rcb_ptr is a free running counter that goes up beyond the ring size.
After the ring wraps around once, tg3_has_work() will always return 1.

The fix is to always do modulo arithmetic on tp->rx_rcb_ptr.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add MSI test for chips that support MSI. If MSI test fails, it will
switch back to INTx mode and will print a message asking the user to
report the failure.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add MSI support for 5751 C0 and 5752.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fix a bug in tg3_set_eeprom() when the length is less than 4 and the
offset is not 4-byte aligned.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add support for the NVRAM lock-out feature for TPM in 5752. If lock-out
is enabled, certain NVRAM registers cannot be written to.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add bit definitions for the new GPIO3 in 5752. GPIO3 must be driven as
output when it is unused.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The 5752 A0 chip ID is wrong in hardware. The simplest way to workaround
it is to change it to the correct value in tp->pci_chip_rev_id. This
way, it is easier to check for the ASIC_REV_5752 in the rest of the
driver.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fix tg3_set_power_state to drive GPIOs properly based on the
TG3_FLAG_EEPROM_WRITE_PROTECT flag. Some delays are also added after D0
and D3 power state changes.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Setup proper GPIO settings in tp->grc_local_ctrl before calling
tg3_set_power() state in tg3_get_invariants() and after chip reset.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Split the 1st half of tg3_phy_probe() into tg3_get_eeprom_hw_cfg() so
that the TG3_FLAG_EEPROM_WRITE_PROT can be determined before calling
tg3_set_power_state() in tg3_get_invariants(). This will allow
tg3_set_power_state() to drive the GPIOs correctly based on the config.
information in eeprom.

On the 5752, there are no pull-up resistors on the GPIO pins and it is
necessary to drive the unused GPIOs as output.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Some minor 5752 fixes mostly for correctness and add 5752 PHY ID.
Signed-off-by: NMichael Chan <mchan@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Replace existing ASIC_REV_5752 definition with ASIC_REV_5752_A0,
and add definition for ASIC_REV_5752_A1. Then, add ASIC_REV_5752_A1
to check for setting TG3_FLG2_5750_PLUS in tg3_get_invariants.
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use check of TG3_FLG2_5750_PLUS in tg3_get_invariants to set
TG3_FLG2_5705_PLUS flag.
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Rewrite checks in tg3_get_invariants to use TG3_FLG2_5705_PLUS and
TG3_FLG2_5750_PLUS flags.
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Rewrite of a couple of troublesome multi-way if statements to use
TG3_FLG2_5705_PLUS flag.
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Replace a number of two-way if statements checking for 5750, and/or
5752 to reference the newly-defined TG3_FLG2_5750_PLUS flag instead.
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Define TG3_FLG2_5750_PLUS flag and set it in tg3_get_invariants for
ASIC_REV_5750 or ASIC_REV_5752.
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Replace a number of three-way if statements checking for 5705, 5750,
and 5752 to reference the equivalent TG3_FLG2_5705_PLUS flag instead.
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add proper entry for bcm5752 PCI ID to pci_ids.h, and use it in tg3.
I did this separately in case patches like this (i.e. new PCI IDs)
need to come from more "official" sources.
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add hard-coded definition of bcm5752 PCI ID to tg3_pci_tbl.
Next patch will change entry to use pci_ids.h-based definition.
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add ASIC_REV_5752 definition.

Track-down all references to ASIC_REV_5750 and mirror them with
references to the newly defined ASIC_REV_5752.
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!